Table 1.

Chemical composition of S. abrotanoides Gas chromatography mass spectrometry. Retention indices (RIs) relative to n-alkanes (C6–C40) on the same methyl silicone capillary column.

No.	Compound	Retention times (RT)	Area (%)
1	α- pinene	9.27	16.7
2	Camphene	9.86	4.2
3	β-pinene	10.86	4.7
4	β-myrcene	11.29	1.2
5	3-Carene	11.98	5.1
6	Cyclohexene	12.31	0.2
7	o-cymene	12.63	0.3
8	D- limonene	12.78	8.5
9	Eucalyptol	12.91	23.5
10	β- ocimene	13.01	0.4
11	γ -terpinene	13.86	0.7
12	Camphor	17.30	20.2
13	Isoborneol	18.15	3.2
14	Terpinen-4-0l	18.46	0.3
15	α-Terpineol	19.01	0.5
16	Caryophyllene	26.60	4.9
17	Humulene	27.77	4.4
	Total		99